705515969 has 4 divisors (see below), whose sum is σ = 705634644. Its totient is φ = 705397296.

The previous prime is 705515957. The next prime is 705515981. The reversal of 705515969 is 969515507.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (705515957) and next prime (705515981).

It can be written as a sum of positive squares in 2 ways, for example, as 687068944 + 18447025 = 26212^2 + 4295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705515969 is a prime.

It is a super-2 number, since 2×705515969² = 995505565028017922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (705515989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49922 + ... + 62475.

It is an arithmetic number, because the mean of its divisors is an integer number (176408661).

Almost surely, 2^705515969 is an apocalyptic number.

It is an amenable number.

705515969 is a deficient number, since it is larger than the sum of its proper divisors (118675).

705515969 is a wasteful number, since it uses less digits than its factorization.

705515969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118674.

The product of its (nonzero) digits is 425250, while the sum is 47.

The square root of 705515969 is about 26561.5505759735. The cubic root of 705515969 is about 890.2301172414.

The spelling of 705515969 in words is "seven hundred five million, five hundred fifteen thousand, nine hundred sixty-nine".